mongoose の ref と populate の sample

add_news.js

#!/usr/bin/env node

var mongoose = require('bluebird').promisifyAll(require('mongoose'));
var uriUtil = require('mongodb-uri');
var mongodbUri = process.env.MONGOLAB_URI || 'mongodb://localhost/emt-dev';
var mongooseUri = uriUtil.formatMongoose(mongodbUri);

import Company from '../server/api/company/company.model'
import News from '../server/api/news/news.model';
import _ from 'lodash';

mongoose.connect(mongooseUri);

var news = new News({
  title: "News Title",
  url: 'http://example.com"',
  pubDate: "Tue, 05 Jan 2016 21:13:48 -0800"
});

news.save(function(error) {
  console.log(news);

  Company.findOne({name: 'Company Name'}).exec(function(error, company) {
    if(error) throw new Error(error);
    company.news.push(news);
    company.save(function(error) {
      console.log(company);

      Company.find({})
      .populate('news')
      .exec(function(error, companies) {
        console.log(JSON.stringify(companies, null, "\t"));
      });
    });
  });
});